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  • Average homeowner rating star icon4.3
    Average homeowner rating
  • Verified reviews icon362
    Verified bathroom fan installations reviews

Verified Reviews for Bathroom Fan Installation pros in Onalaska, WI

*The Angi rating for Bathroom Fan Installation companies in Onalaska, WI is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Bathroom Fan Installation needs.

*The HomeAdvisor rating for Bathroom Fan Installation companies in Onalaska, WI is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Bathroom Fan Installation needs.

Last update on October 09, 2025

Find Bathroom fan installation pros in Onalaska

Avatar for Sparks Electric, LLC
Sparks Electric, LLC
4.8(
12
)
Bath Exhaust Fan - InstallBath Exhaust Fan - Repair

Serving Onalaska, WI and surrounding areas

In business since 2015

Free estimates

Credit card accepted

"I highly recommend Sparks Electric. They recently completed an electrical box expansion, installed two ceiling fans, and replaced two bathroom fans in my home. Blake provided an itemized quote for a fair price before starting the job. His team arrived on time, were polite, and cleaned up after themselves. They also had excellent communication throughout the project. Iâ m very pleased with their work and recommend them to anyone looking for electrical work."
Sub panel installation
Response time2 days
Response rate95%
Recommended by100%of homeowners
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Avatar for American Home Shield – Home Warranty
American Home Shield – Home Warranty
3.5(
5,688
)
Bath Exhaust Fan - InstallBath Exhaust Fan - Repair

Serving Onalaska, WI and surrounding areas

In business since 1971

Credit card accepted

"The furnace took 4 days to get approved( not counting a Sunday) the others were quick but the water heater had to be ordered so without hot water for a week. One ceiling fan was easy but within a year their policy changed and They would not install the one I purchased and had to get a new one approved and then ordered online and took several weeks to get straightened out. Not sure who was at fault, AHS, installer or scheduling with renter. Fee is usually $75 per visit"
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+2

Recommended by65%of homeowners
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Billy's Handyman
5.0(
1
)
Bath Exhaust Fan - InstallBath Exhaust Fan - Repair

Serving Onalaska, WI and surrounding areas

In business since 2017

Free estimates

We specialize in handyman services, home repairs, and more! We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule a free estimate today!

Recommended by100%of homeowners
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Bathroom Fan Installation questions, answered by experts

Regularly clean fan grilles, check for dust buildup, and ensure proper venting to prevent mold growth.

Fan power is measured by CFM, or cubic feet per minute. For every 1,000 feet of square footage in your attic, you need a minimum of 700 CFM. Steeper roofs may need larger fans or about 840 CFM.  You can figure the size of attic fan you need by multiplying the square footage of your attic floor by 0.7. (multiply by 1.2 for a steep roof and 1.15 for a dark roof). That number is the CFM required for your fan to run efficiently.

The square footage of your room will dictate the correct ceiling fan blade size. For example: 

  • Rooms smaller than 75 square feet require a fan that is 29 to 36 inches.

  • Rooms up to 175 square feet require 42- to 48-inch fans.

  • Rooms up to 350 square feet require 52- to 56-inch fans.

  • Expansive spaces over 350 square feet need a fan larger than 60 inches.

Yes, you can run an attic fan with the AC on. In fact, you don’t have a choice with a passive attic fan. Plus, when an attic fan draws out hot air from the attic, it helps regulate the temperature of your whole home, so your AC doesn't have to work as hard.

The average life span of a thermoelectric fan operating seasonally is two to three years. However, the life span of a wood stove fan depends on its quality, usage, and maintenance. Regular cleaning of the blades and ensuring the fan operates within its recommended temperature range can help prolong its life span.

The Onalaska, WI homeowners’ guide to bathroom fan installations

From average costs to expert advice, get all the answers you need to get your job done.

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